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/*
*
* Copyright 2016 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#include <gtest/gtest.h>
#include "google/protobuf/duration.upb.h"
#include "upb/upb.hpp"
#include <grpc/grpc.h>
#include <grpcpp/support/config.h>
#include "src/core/ext/filters/client_channel/lb_policy/grpclb/load_balancer_api.h"
#include "src/core/lib/address_utils/sockaddr_utils.h"
#include "src/core/lib/iomgr/sockaddr.h"
#include "src/proto/grpc/lb/v1/load_balancer.pb.h" // C++ version
#include "test/core/util/test_config.h"
namespace grpc {
namespace {
using grpc::lb::v1::LoadBalanceRequest;
using grpc::lb::v1::LoadBalanceResponse;
class GrpclbTest : public ::testing::Test {
protected:
static void SetUpTestCase() { grpc_init(); }
static void TearDownTestCase() { grpc_shutdown(); }
};
std::string Ip4ToPackedString(const char* ip_str) {
struct in_addr ip4;
GPR_ASSERT(inet_pton(AF_INET, ip_str, &ip4) == 1);
return std::string(reinterpret_cast<const char*>(&ip4), sizeof(ip4));
}
std::string PackedStringToIp(const grpc_core::GrpcLbServer& server) {
char ip_str[46] = {0};
int af = -1;
if (server.ip_size == 4) {
af = AF_INET;
} else if (server.ip_size == 16) {
af = AF_INET6;
} else {
abort();
}
GPR_ASSERT(inet_ntop(af, (void*)server.ip_addr, ip_str, 46) != nullptr);
return ip_str;
}
TEST_F(GrpclbTest, CreateRequest) {
const std::string service_name = "AServiceName";
LoadBalanceRequest request;
upb::Arena arena;
grpc_slice slice =
grpc_core::GrpcLbRequestCreate(service_name.c_str(), arena.ptr());
const int num_bytes_written = GRPC_SLICE_LENGTH(slice);
EXPECT_GT(num_bytes_written, 0);
request.ParseFromArray(GRPC_SLICE_START_PTR(slice), num_bytes_written);
EXPECT_EQ(request.initial_request().name(), service_name);
grpc_slice_unref(slice);
}
TEST_F(GrpclbTest, ParseInitialResponse) {
// Construct response to parse.
LoadBalanceResponse response;
auto* initial_response = response.mutable_initial_response();
auto* client_stats_report_interval =
initial_response->mutable_client_stats_report_interval();
client_stats_report_interval->set_seconds(123);
client_stats_report_interval->set_nanos(456000000);
const std::string encoded_response = response.SerializeAsString();
grpc_slice encoded_slice =
grpc_slice_from_copied_string(encoded_response.c_str());
// Test parsing.
grpc_core::GrpcLbResponse resp;
upb::Arena arena;
ASSERT_TRUE(
grpc_core::GrpcLbResponseParse(encoded_slice, arena.ptr(), &resp));
grpc_slice_unref(encoded_slice);
EXPECT_EQ(resp.type, resp.INITIAL);
EXPECT_EQ(resp.client_stats_report_interval,
grpc_core::Duration::Milliseconds(123456));
EXPECT_EQ(resp.serverlist.size(), 0);
}
TEST_F(GrpclbTest, ParseResponseServerList) {
// Construct response to parse.
LoadBalanceResponse response;
auto* serverlist = response.mutable_server_list();
auto* server = serverlist->add_servers();
server->set_ip_address(Ip4ToPackedString("127.0.0.1"));
server->set_port(12345);
server->set_load_balance_token("rate_limting");
server->set_drop(true);
server = response.mutable_server_list()->add_servers();
server->set_ip_address(Ip4ToPackedString("10.0.0.1"));
server->set_port(54321);
server->set_load_balance_token("load_balancing");
server->set_drop(true);
const std::string encoded_response = response.SerializeAsString();
const grpc_slice encoded_slice = grpc_slice_from_copied_buffer(
encoded_response.data(), encoded_response.size());
// Test parsing.
grpc_core::GrpcLbResponse resp;
upb::Arena arena;
ASSERT_TRUE(
grpc_core::GrpcLbResponseParse(encoded_slice, arena.ptr(), &resp));
grpc_slice_unref(encoded_slice);
EXPECT_EQ(resp.type, resp.SERVERLIST);
EXPECT_EQ(resp.serverlist.size(), 2);
EXPECT_EQ(PackedStringToIp(resp.serverlist[0]), "127.0.0.1");
EXPECT_EQ(resp.serverlist[0].port, 12345);
EXPECT_STREQ(resp.serverlist[0].load_balance_token, "rate_limting");
EXPECT_TRUE(resp.serverlist[0].drop);
EXPECT_EQ(PackedStringToIp(resp.serverlist[1]), "10.0.0.1");
EXPECT_EQ(resp.serverlist[1].port, 54321);
EXPECT_STREQ(resp.serverlist[1].load_balance_token, "load_balancing");
EXPECT_TRUE(resp.serverlist[1].drop);
}
} // namespace
} // namespace grpc
int main(int argc, char** argv) {
grpc::testing::TestEnvironment env(&argc, argv);
::testing::InitGoogleTest(&argc, argv);
int ret = RUN_ALL_TESTS();
return ret;
}
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